BS EN 60137:2017:2018 Edition
$198.66
Insulated bushings for alternating voltages above 1000 V
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 66 |
This International Standard specifies the characteristics and tests for insulated bushings.
This standard is applicable to bushings, as defined in Clause 3, intended for use in electrical apparatus, machinery, transformers, switchgear and installations for three-phase alternating current systems, having highest voltage for equipment above 1 000 V and power frequencies of 15 Hz up to and including 60 Hz.
Subject to special agreement between purchaser and supplier, this standard may be applied, in part or as a whole, to the following:
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bushings used in other than three-phase systems;
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bushings for high-voltage direct current systems;
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bushings for testing transformers;
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bushings for capacitors.
Special requirements and tests for transformer bushings in this standard apply also to reactor bushings.
This standard is applicable to bushings made and sold separately. Bushings which are a part of an apparatus and which cannot be tested according to this standard should be tested with the apparatus of which they form part.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | English CONTENTS |
| 12 | FOREWORD |
| 14 | INTRODUCTION |
| 15 | 1 Scope 2 Normative references |
| 17 | 3 Terms and definitions |
| 23 | 4 Ratings 4.1 Rated highest voltage for equipment (Um) 4.2 Rated current (Ir) 4.3 Rated thermal short-time current (Ith) |
| 24 | 4.4 Rated dynamic current (Id) 4.5 Minimum withstand values of cantilever load Tables Table 1 – Minimum values of cantilever withstand load (see 4.5 and 8.10) |
| 25 | 4.6 Angle of mounting 4.7 Minimum nominal creepage distance 4.8 Temperature limits and temperature rise 4.9 Insulation levels |
| 26 | Table 2 – Maximum values of temperature and temperature rise above ambient air (see 4.8) |
| 27 | Table 3 – Insulation levels for highest voltage for equipment (Um) (see 4.9, 8.2, 8.4, 8.5, 9.3 and 9.4) |
| 28 | 4.10 Test tap on transformer bushings 5 Operating conditions 5.1 Temporary overvoltages |
| 29 | 5.2 Altitude Figures Figure 1 – Factor m on the co-ordination switching impulse withstand voltage |
| 30 | 5.3 Temperature of ambient air and immersion media 5.4 Seismic conditions Table 4 – Temperature of ambient air and immersion media |
| 31 | 5.5 Very fast transients (VFT) 5.6 Transformer insulating liquid 6 Ordering information and markings 6.1 Enumeration of characteristics 6.1.1 General 6.1.2 Application 6.1.3 Classification of bushings 6.1.4 Ratings |
| 32 | 6.1.5 Operating conditions 6.1.6 Design |
| 33 | 6.2 Markings |
| 34 | 7 Test requirements 7.1 General requirements Figure 2 – Marking plate for bushings for rated highest voltage for equipment (Um) greater than 100 kV Figure 3 – Marking plate for bushings for rated highest voltage for equipment (Um) equal to or less than 100 kV, except for bushings for which Figure 4 is applicable Figure 4 – Marking plate for bushings for rated highest voltage for equipment (Um) equal to or less than 52 kV made of ceramic, glass or inorganic materials, resin or combined insulation (see 10.3) |
| 35 | 7.2 Test classification 7.2.1 General 7.2.2 Type tests |
| 36 | 7.2.3 Routine tests Table 5 – Applicability of type tests (see 7.2.2, excluding bushings according to Clause 10) |
| 37 | 7.2.4 Special tests 7.3 Condition of bushings during dielectric and thermal tests Table 6 – Applicability of routine tests (see 7.2.3, excluding bushings according to Clause 10) |
| 38 | Table 7 – Correction of test voltages (see 7.3) |
| 39 | 8 Type tests 8.1 General 8.2 Dry or wet power-frequency voltage withstand test 8.2.1 Applicability 8.2.2 Test method and requirements 8.2.3 Acceptance 8.3 Long duration power-frequency voltage withstand test (ACLD) 8.3.1 Applicability 8.3.2 Test method and requirements |
| 40 | 8.3.3 Acceptance 8.4 Dry lightning impulse voltage withstand test 8.4.1 Applicability 8.4.2 Test method and requirements Figure 5 – Voltage profile for long duration test |
| 41 | 8.4.3 Acceptance 8.5 Dry or wet switching impulse voltage withstand test 8.5.1 Applicability 8.5.2 Test method and requirements |
| 42 | 8.5.3 Acceptance 8.6 Thermal stability test 8.6.1 Applicability |
| 43 | 8.6.2 Test method and requirements 8.6.3 Acceptance 8.7 Electromagnetic compatibility tests (EMC) 8.7.1 Emission test |
| 45 | 8.7.2 Immunity test 8.8 Temperature rise test 8.8.1 Applicability 8.8.2 Test method and requirements |
| 46 | 8.8.3 Acceptance 8.9 Verification of thermal short-time current withstand 8.9.1 Applicability 8.9.2 Verification method and requirements |
| 47 | 8.9.3 Acceptance 8.10 Cantilever load withstand test 8.10.1 Applicability 8.10.2 Test method and requirements |
| 48 | 8.10.3 Acceptance 8.11 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings 8.11.1 Applicability 8.11.2 Test method and requirements |
| 49 | 8.11.3 Acceptance 8.12 Internal pressure test on gas-filled, gas-insulated and gas-impregnated bushings 8.12.1 Applicability 8.12.2 Test method and requirements 8.12.3 Acceptance 8.13 External pressure test on partly or completely gas-immersed bushings 8.13.1 Applicability 8.13.2 Test method and requirements 8.13.3 Acceptance 8.14 Verification of dimensions 8.14.1 Applicability |
| 50 | 8.14.2 Acceptance 9 Routine tests 9.1 General 9.2 Measurement of dielectric dissipation factor (tan δ ) and capacitance at ambient temperature 9.2.1 Applicability 9.2.2 Test method and requirements 9.2.3 Acceptance |
| 51 | 9.3 Dry lightning impulse voltage withstand test 9.3.1 Applicability 9.3.2 Test method and requirements 9.3.3 Acceptance 9.4 Dry power-frequency voltage withstand test 9.4.1 Applicability Table 8 – Maximum values of tan δ and tan δ increase (see 9.2) |
| 52 | 9.4.2 Test method and requirements 9.4.3 Acceptance 9.5 Measurement of partial discharge quantity 9.5.1 Applicability 9.5.2 Test method and requirements 9.5.3 Acceptance |
| 53 | 9.6 Tests of tap insulation 9.6.1 Applicability and test requirements 9.6.2 Acceptance Table 9 – Maximum values of partial discharge quantity (see 8.3 and 9.5) |
| 54 | 9.7 Internal pressure test on gas-filled, gas-insulated and gas-impregnated bushings 9.7.1 Applicability 9.7.2 Test method and requirements 9.7.3 Acceptance 9.8 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings 9.8.1 Applicability 9.8.2 Test method and requirements 9.8.3 Acceptance 9.9 Tightness test on gas-filled, gas-insulated and gas-impregnated bushings 9.9.1 Applicability |
| 55 | 9.9.2 Test method and requirements 9.9.3 Acceptance 9.10 Tightness test at the flange or other fixing device 9.10.1 Applicability 9.10.2 Test method and requirements |
| 56 | 9.10.3 Acceptance 9.11 Visual inspection and dimensional check 9.11.1 Applicability 9.11.2 Acceptance 10 Requirements and tests for non-capacitance graded bushings of rated highest voltages for equipment up to and including 52 kV 10.1 General 10.2 Temperature requirements 10.3 Level of immersion medium 10.4 Markings |
| 57 | 10.5 Test requirements 10.5.1 General 10.5.2 Type tests 10.5.3 Routine tests Table 10 – Applicability of type tests for bushings according to Clause 10 (see 10.5.1) |
| 58 | 11 Recommendations for transport, storage, erection, operation and maintenance 11.1 General 11.2 Conditions during transport, storage and installation 11.3 Installation 11.4 Unpacking and lifting Table 11 – Applicability of routine tests for bushings according to Clause 10 (see 10.5.3) |
| 59 | 11.5 Assembly 11.5.1 General 11.5.2 Mounting 11.5.3 Connections 11.5.4 Final installation inspection |
| 60 | 11.6 Operation 11.7 Maintenance 11.7.1 General 11.7.2 Recommendation for the manufacturer |
| 61 | 11.7.3 Recommendations for the user 11.7.4 Failure report |
| 62 | 12 Safety 12.1 General 12.2 Electrical aspects 12.3 Mechanical aspects |
| 63 | 12.4 Thermal aspects 13 Environmental aspects |
| 64 | Annex A (informative) Determination of the hottest spot in bushings with conductors embedded in the insulation material |
| 65 | Bibliography |
